a = 1
while a <= 5:
    print('今天是第', a)
    a = a + 1

n = 1
sum = 0
while n <= 100:
    sum = sum + n
    n = n + 1
    # print(sum)
print(sum)

for i in 'python':
    print(i)

for i in range(1, 10, 2):
    print(i)
    print()

i = 1
while i <= 5:
    print("上班星期为:,i")
    i = i + 1
    t = 9
    while t <= 17:
        print('时间段：', t, end=" ")
        t = t + 1
    print()


for i in range(1, 6):
    print('上班周为：',i)
    for t in range(9,18):
        print('时间段为：',t,end="")
    print()



i = 1
while i <= 9:
    j = 1
    while j <= i:
        print('%d*%d=%d' % (j, i, j*i), end="  ")
        j = j+1
    print()
    i = i+1


for i in range(1,10):
    for j in range(1,1+i):
        print('%d*%d=%d' % (j, i, j*i), end="  ")
    print()






